Allow Transactions to be configured as persistent or non-persistent at creation

[rickyyx]

Problem:

Need to allow transactions to be run as persisten/non-persistent so that benchmarks can be run to determine the effect of making data persistent

TODOs:

• [x] Modify the transaction interface
• [x] Benchmark non-persistent versions.

[rickyyx]

Close 165a10150fa147ed463f079ed2e22cf954576a2b